

RAM Mounts Universal Marine Electronics Mount for Square Posts up to 51 mm, C-Size (RAM-111-247U-2) is built for forklifts and other vehicles with square cab posts. The clamp base wraps around posts up to 51 mm wide and is tightened with the included bolts and nuts, so there is no drilling into the frame. A medium 145 mm C-size (1.5") double socket arm carries a 159 × 51 mm universal plate with many hole positions for GPS units, radios, third-party cradles and gimbal brackets.
📦 What's in the box – RAM-111-247U-2
- Square post clamp base with C-size ball – for square posts up to 51 mm wide
- Double socket arm (C size, medium) – 145 mm overall, 118 mm socket to socket
- Universal marine electronics plate with C-size ball – 159 × 51 mm, multiple mounting hole positions
- Mounting hardware – 2 × 5/16"-18 × 3" machine screws and 2 × 5/16"-18 nyloc nuts
💡 You might also consider a key-locking knob to deter theft, or a long C-size arm for extra reach.
Key Features
- Square post clamp – clamps around square posts up to 51 mm wide – such as forklift cab frames – and is tightened with the included bolts and nuts, no drilling needed
- Universal electronics plate – the 159 × 51 mm plate offers many hole positions for GPS units, CB and ham radios, third-party cradles and gimbal brackets; extra holes can be drilled if needed
- Patented ball-and-socket system – C-size (1.5") rubber balls adjust at both ends of the arm and damp shock and vibration
- Medium double socket arm – 145 mm overall, 118 mm socket to socket, with an easy-to-adjust knob
- Load capacity – 1.8 kg (4 lb) for standard use, 1.4 kg (3 lb) for heavy-duty use
- Durable construction – marine-grade aluminium
Compatibility
- Square posts up to 51 mm wide, e.g. forklift cab frames
- GPS units, CB and ham radios, third-party cradles and gimbal brackets
- All RAM C-size (1.5") ball bases, adapters and holders
Technical Specifications
| Part Number | RAM-111-247U-2 |
|---|---|
| Product Type | Square post clamp mount kit |
| Connection | RAM C-size ball (1.5") |
| Load Capacity | 1.8 kg (4 lb) for standard use, 1.4 kg (3 lb) for heavy-duty use |
| Material | Marine-grade aluminium |
| Dimensions | Arm 145 mm overall (118 mm socket to socket); overall height 199 mm; universal plate 159 × 51 mm |
| Weight | 2.27 kg (5 lb) |
| In the Box | Square post clamp base with C-size ball, double socket arm (C size, medium), universal marine electronics plate with C-size ball, mounting hardware |
More RAM cradles, ball bases and socket arms are waiting in our Mobile Terminal Accessories collection. Planning a vehicle or forklift installation, or ordering for a whole fleet? Contact us for project support and volume pricing.
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